Best free AI email writer in 2026: 8 picks for sellers

An AI email writer turns a few lines of notes into an email you can edit and send. It knows nothing about your buyer except what you type, so the draft is only as good as the notes behind it.

Where a free writer lives matters more than the brand:

• Mailmeteor and QuillBot: paste your notes into a box on their site and copy the draft out, with no account.
• ChatGPT: drafts any email you describe and rewrites it as often as you ask.
• Gemini in Gmail: drafts inside the compose window you already use.
• Grammarly: fixes your own typing, and rewrites a line when you ask.
• HubSpot, Lavender and Snov.io: sales tools that log the email in a CRM, score it, or send it as part of a sequence.

Most of a seller's email is the same five jobs: the follow-up after a call or demo, the reply to a buyer's question, the meeting request, the nudge when someone has gone quiet, and the odd cold first email. Follow-up email templates has twelve ready versions. An AI writer earns its place when you want the email built around what this buyer said.

Every price and limit here comes from the product's own site or help pages, read on 29 October 2026. We didn't test them hands-on, and there are no star ratings. Prices are in US dollars, as of October 2026.

A tool made the list if its free version writes real emails, not three drafts and a sign-up wall. Then we weighed five things a seller cares about:

1. The free limit lasts a working week. If you send ten follow-ups a day, a writer that stops you at lunch on Monday is a trial, not a free plan.
2. It writes replies as well as first emails, because most of your day is answering people.
3. You can set the tone and the length, so the draft sounds like you and fits on a phone screen.
4. It works where you already write, in the inbox or on your phone.
5. Its own pages say what happens to the text you paste in.

We left out Copilot in Outlook. It drafts and changes tone and length, but Microsoft's help page lists no free way in, and tells you to check with your IT admin if you can't see it.

ChatGPT is first because it handles every kind of email a seller writes, and its free plan puts no cap on text chats.

1. ChatGPT: best free AI email writer for most sellers

ChatGPT drafts any email you can describe: the follow-up after a demo, the answer to a buyer's pricing question, a polite nudge to someone who went quiet. Its email writer page takes a few details, a tone from Friendly and Professional to Concise and Casual, and a length from Brief to Comprehensive. To answer a buyer, paste their email into a chat, ask for a reply, then tell it what to change.

The free plan gives you unlimited text chats and caps file uploads and memory. The paid plans lift those caps and add advanced reasoning; for their prices, see their pricing page. On the free plan your chats train OpenAI's models unless you opt out, and the email writer page says chats can be reviewed.

Pick it if you write ten different emails a day and want one place to draft and rework all of them. Skip it if you won't leave your inbox to write, or can't keep client details out of a chat window.

2. Gemini in Gmail: best if you answer buyers from Gmail

"Help me write" is Gemini's writer inside Gmail's compose window. It drafts a new email or a reply from your prompt, or reworks what you've typed, and you refine the result with Formalize, Friendly, Shorten or a fresh instruction. It also pulls details from your other emails and Drive files into the draft, and a Sources button shows which ones it used.

Google's help page lists two ways in. A personal Google account gets it in supported languages, in the US only. Outside the US, you get it by paying for an eligible Google Workspace or Google AI plan.

Pick it if you reply to buyers in Gmail all day and the right answer depends on a detail buried three emails back. Skip it if you're outside the US on a personal account, because there it isn't free.

3. Grammarly: best for checking emails you write yourself

Grammarly fixes spelling and grammar as you type and shows how your tone comes across. The free plan adds 100 AI prompts a month to draft or rewrite text. There are Grammarly apps for iPhone and Android, plus a version for Google Docs.

Pro is US$12 a month with a free trial, and adds one-click rewrites of whole sentences and 2,000 prompts a month.

Pick it if you'd rather write your own emails and want a check before a proposal goes out. Skip it if you want every email drafted for you: at ten drafts a day, 100 prompts are gone in two working weeks.

4. Mailmeteor AI Email Writer: best with no sign-up and no quota

Open Mailmeteor's writer in any browser, say who the email is for and what you want from it, then copy the draft into Gmail or Outlook. Put the length or the language in the prompt, such as "three sentences, in Spanish", and it writes in most major languages.

It's free with no sign-up and no usage quota. Mailmeteor says your prompts don't train any model, aren't kept past a short abuse-prevention window, and that it doesn't log your drafts. Its paid plans, from US$5.99 per user a month, are for sending mail merges from Gmail, not for the writer.

Pick it if you want a clean draft in your phone's browser, with no account to create. Skip it if you want your drafts kept: with no account there's no history to come back to.

5. QuillBot AI Email Writer: best for a first draft in another language

QuillBot's writer, still marked beta, works like a chat. Type what the email has to do, add context until the draft fits, then copy it into your inbox. You can ask for friendly, formal, persuasive or casual, and it writes in English, Spanish, French, German and more. QuillBot also has a Chrome extension and desktop apps.

It's free with no sign-up. For QuillBot's paid plan, see their pricing page.

Pick it if some buyers write to you in another language, such as Spanish or German, and you want a draft in their language to check and send. Skip it if you want the writer inside your CRM or your sequences: it writes one email at a time and sends nothing.

6. HubSpot: best if you want each email logged in a free CRM

HubSpot's AI email writer is built into its sales and marketing tools. You draft from a prompt, change the length or tone with slash and highlight commands, and the CRM logs the email against the contact. HubSpot's own page tells you to check the accuracy of what it writes before you send.

The AI email writing features are free, with no credit card, and HubSpot charges only for Marketing Hub's paid editions.

Pick it if you want each email sitting on the contact's record before your next call. Skip it if your contacts live in another CRM and you won't move them.

7. Lavender: best for cold emails you want scored first

Lavender is an email coach for SDRs and account executives. It suggests drafts, shows context on the person you're writing to, scores each email against best practice and offers AI fixes for what drags the score down. Lavender says emails that score 90 or above get more replies. The free plan works in Gmail and Outlook 365.

On Basic, free for good, Lavender analyses five of your emails a month and personalises five. Starter is US$27 a month billed annually, with unlimited emails, and the seven-day free trial needs no card.

Pick it if you send a handful of cold emails a week to buyers who matter and want a second opinion on each. Skip it if you write more than five a month and won't pay: the free plan runs out in your first week.

8. Snov.io AI Email Writer: best for cold outreach that turns into a sequence

Snov.io's free writer drafts outreach emails on its site, and when you hit the free limit, a free Snov.io account unlocks unlimited drafts. Inside the account, AI Studio builds a profile of your ideal customer from your product or website, writes emails for it in the tone and structure you pick, and adds them to a sequence you send from Snov.io.

The Trial plan never expires: every 30 days you get 50 credits, 100 recipients and one mailbox to warm up. Starter is US$29.25 a month billed annually.

Pick it if you prospect by email and want the writing and the sending in one place. Skip it if most of your emails go to people you've already met: it's built for the first touch.

Each paid price is per month. Lavender and Snov.io show the rate billed annually.

Open last week's sent folder and find the email that sat in drafts longest. Fix that one first.

• The follow-up after a call: ChatGPT, with your call notes pasted in, ten minutes after you hang up while the buyer's words are fresh.
• Replies in Gmail: Gemini's "Help me write", if you're in the US on a personal account, because it pulls the earlier details from your mail.
• The cold first email: let Lavender score it before it goes, or write it in Snov.io and send it as a sequence. The cold email templates give you a structure to start from.
• If you'd rather write it yourself: Grammarly checks it before it goes.
• A one-off on someone else's laptop: Mailmeteor or QuillBot, with nothing to install.
• Emails you'll need to reread before the next call: write them in HubSpot, which logs each one on the contact.

A one-line prompt gets a one-size email, as it does for every other sales prompt. Give the writer five things:

1. Who it's to, and how well you know them.
2. What happened last: the call, the demo, the quote, or the silence.
3. One thing they said, in their words.
4. The one thing you want them to do, such as book a call.
5. The tone and the length, such as "warm, plain, under 80 words".

End with one more line telling it not to add facts you haven't given it. A writer that's short of facts fills the gap with something plausible, which is why you still check the draft.

HubSpot tells you to check the accuracy of what its writer produces, and Mailmeteor warns that a draft can get facts and names wrong. Run this list on every draft:

• Names: spelled right, and the right person.
• Days and times: checked against your calendar.
• Prices and figures: keep only the ones you gave it.
• Promises: delete anything you didn't agree to.
• Attachments: if it says attached, attach it.
• One ask: if there are two, cut one.
• The subject line: the topic and the next step, such as "Switch-over checklist and Friday's call".

Then read it out loud once. A line you'd never say to the buyer's face comes out.

Before you paste anything, know where it goes:

• ChatGPT's free plan trains on your chats unless you opt out.
• Mailmeteor says your prompts don't train any model and it doesn't log your drafts.
• Gemini in Gmail reads your other emails and Drive files to fill in a draft, and Google says that information is used only for the drafts you ask for.

Whichever you use, keep out client ID and account numbers, bank details, contract terms and anything a client asked you to keep between the two of you. Write "the client" or "the deposit" in the prompt, and type the real detail into the email yourself. Mailmeteor goes further and tells you to keep its writer away from legal and confidential emails. If your employer has rules on AI tools, those come first.

Not because AI wrote them. Google's email sender guidelines for Gmail are about how mail is sent. Senders have to authenticate their domain and keep down the share of recipients who report them as spam. Who wrote the words isn't on the list.

The part you control is the last one. An email written to one person, about something only they would recognise, gives them no reason to report it. The same draft pasted to 200 people gives them plenty. A writer hands you a first draft, and making it personal is still your job.

The draft is the easy half. Deals go quiet in the days after an email, when nobody checks back. Do this the moment you send:

1. Set a follow-up three working days out, on that buyer's record.
2. Write one line on it: what you asked for, and what you'll do if there's no reply.
3. When the day comes, send something new: the checklist you promised, a slot that's just opened, or a smaller ask.

The sales follow-up process covers what to send each time and when to stop.

• OpenAI, ChatGPT pricing, read 29 October 2026
• OpenAI, ChatGPT email writer, read 29 October 2026
• Google, Draft emails with Gemini in Gmail, read 29 October 2026
• Google, Email sender guidelines, read 29 October 2026
• Microsoft, Draft an email message with Copilot in Outlook, read 29 October 2026
• Grammarly, Plans, read 29 October 2026
• Mailmeteor, AI Email Writer, read 29 October 2026
• Mailmeteor, Pricing, read 29 October 2026
• QuillBot, AI email writer, read 29 October 2026
• HubSpot, AI email writer, read 29 October 2026
• Lavender, Email Coach, read 29 October 2026
• Snov.io, AI Email Writer, read 29 October 2026
• Snov.io, Pricing, read 29 October 2026